Seiko Cal. 4537 - 101

The 4537-101 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4537 caliber with 33j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-ccf6e69fe149]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1994

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